Harvesting-machine.



No. 999,277. Patented may s, |902.

A. T. ZETTERLUND.

HARVESTING MACHINE.

(Application filed Jan. 28, 1901.)

(No Model.)

3 Sheets-Sheet I` 'Patented May 6, |902..

A. T. ZETTEBLUND. HARvEsTING MACHINE.

(Application med Jan. 2s, 190'1.)

3 Sheets-Sheet 2` (No Model.)

rus Normes PETERS co, Fuero-uma.. wAsn|N GToN, u, cA

No. 699,277.l Patented May s, |902. y

- A. T. zlarlamumk` HARVESTING MACHINE.

(Application alga Jau. 2e. 1901.)y (No Model.) 3 Sheets-Sheet 3.

Tn: imams m55 cm PHoTaLn'uo, WASHINGTON. D. c.

4 UNITED STATESE- PATENT OFFICE. g

AUGUST TH. ZETTERLUND, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE- THIRD TOMILTON L. THAOKABERRY, OF CHICAGO, ILLINOIS.

HARVESTINGflVIACHINE.

SPEGIFI'CATION forming part of Letters Patent No. 699,277, dated May,1902.

Application filed January 28, 1901. Serial No. 45,034. (No model.)

To all whom it may concern:

Be it known that I, AUGUST TH. ZETTER- LUND, a citizen of the UnitedStates, residing l at Chicago, in the county of Cook and State ofIllinois, have invented a certain new and useful Improvement inHarvesting-Machi nes,

.(Case No. 1,) of which the following is a full,

. chinery, and more particularly to those halblades or shares.

vesting-machines employed inthe reapingand mowing of grasses or likeproducts.

My invention has for its object the provision of an improved machine ofthis classby which the grass to bemowed is brought in contact with twotransversely-movable knife In this manner each blade of grass in thepath of the machine is severed, whereas if vone movable and onestationary cutting-blade are employed some of the grass in the path ofthe machine is bent over in-l stead of being cut. My invention has forits furtherobject the provision of actuating mechanism associated withcutting-blades for transferring motion thereto from the rotatingportions of the machine-as, for instance, from one of the wheelsthereof. By means 'of my invention I am enabled to construct the machinein such manner that the cutting-blades thereof are actuated in anexceedingly rapid manner even when the machine is moved slowly.

My invention is particularly applicable in mowing fields which arecovered with thick and heavy growths of grass or the like due to therapid actuation of the oppositely-moving cutting-blades in the machine.

A further feature of my invention consists in the simple and efficientmeans employed to impart rapid motion to the cutting-blades, thearrangement being such that the loss due to friction in the moving partsis reduced to a small quantity.

In accordancewith my invention I provide two oppositely-fmoving sets ofknives or cutting-blades, which are adapted to shear or sever the grasswhen suitably actuated, each piece of grass being brought into contactwith the two transversely-movable cutting edges. In the preferredembodiment of my `invention I utilize one of the wheels of themachinefto supply the motive power for actuatin g theknife-blades byproviding thereon a wave-shaped cam,which may be constructed in the formof a sine curve. I provide two sets of cam-rollers in contact with saidwave- Vshaped cam, associated, respectively, with the knife-bladesthrough suitable lever mechanism. The two sets of rollers are placed incontact with the wave-shaped cam in such al way that a relativelyopposite reciprocation .thereof is effected. Inthis manner I securev arelatively opposite reciprocation of the two sets of knife-blades, whichknife-blades are preferably vertically disposed-With respect toeachother.

I provide means in connection with my in vention for controlling theengagement of the cam-rollers with the actuating-cam, so that themachine may be transported Without actuating the knife-blades.' Iprovide further means in connection with'my invention for controllingthe height above the ground at which the grass is to be severed.

Further features of my invention will be set forth hereinafter.

I will explain my invention in detail by reference to the accompanyingdrawings, illustrating the preferred embodiment thereof, in which-Figure l is a top view, partially in section,

of a machine constructed in accordance with my invention. Fig. 2 is asectional view on line a a, of Fig. l. Fig. 3 is a sectional view online b h of Fig. l. Fig. 4 is a sectional View on line c c of Fig. l.Fig. 5 isa rear view, partly in section, oi' my improved machine, thecutting portions thereof being removed. Fig. 6 is apartial sectionalview on line d d of Fig. 4. Fig. 7 is a detail view of the adjustablesupport for the knife-blade supports. Fig. 8 is a detail view showingfeatures of construction along line 8 8 of Fig. 1.

Like characters of reference indicate like parts throughout thedierent-views.

The machine of my invention is provided with a traction-wheel 1, looselymounted upon a shaft 2. A nut 3 is located upon said shaft to act as acollar for the hub of the said wheel IOO cam 4 upon its interiorperiphery, which cam is adapted to cause an actuation of the two sets ofrelatively oppositely reciprocating knife blades 5 6. 'lhe two sets ofknife blades preferably consist of a plurality of double-edged knivesintegrally united to a back-piece, the angles of the cutting edges ofsaid knives being preferably arranged at an angle of sixty degrees tothe back-piece. The two sets of knife-blades 5 and 6 are mountedpreferably one above the other adjacent to the forward edge of asupporting-plate 7. The knife-blades 5 and 6 are held in place by meansof clasps 8 8, arranged upon both sides of the supporting-bar 7 and heldin place thereon preferably by means of rivets 9 9. The clasps 8 8engage suitable projectingr portions or back-pieces 10 l0, provided uponthe rear end of each set of knife-blades, by means of which projectionssaid knife-blades are held in place alongside the supporting-bar 7,butare not prevented thereby in a movement transverse to the saidmachine. The supporting-bar 7 is secured at one end to a cross-bar 1l,which cross-bar supports a sliding shoe 12, rotatably secured at one endthereof by means of a pin 13 and adjustably secured to the other endthrough the agency of the slotted arm 14 and the set-screw 15. Anadjustment of the shoe 12 effects a raising or lowering of the outerportion of the supportingbar 7, thereby bringing the knife-edges fartheraway from or closer to the ground. The inner end of each set ofknife-blades is provided with a vertically-projecting arm 16, which areeach pivotallyv secured to a connecting-bar 17. 'lhe connecting-bars 17are in turn each pivotally secured to a lever 18, rotatably mounted upona shaft 19. Each lever 18 is provided at its upper extremity with arotatably-mounted disk 20, each of which disks is provided with a pairof rollers 21 21. The two rollers 21 21 of each set are adapted toengage the cam 4 upon opposing surfaces thereof, so that aforwardand-backward movement of the lever 18 is effected by means ofsaid cam and said rollers. The rollers are placed along the cam 4preferably in such a position that when one lever 18 has reached itslimit in its forward movement the othercontact-lever has reached thelimit of its movement in the opposite direction. In this manner anopposite reciprocatiou of the levers 18 is effected. This oppositereciprocation of the levers 18 is transferred to the connecting-rods 17and by them to the two sets of movable knife-blades. An oppositemovement of the two sets of knifeblades is thus effected, and grass orother products in the path of the moving machine are severed by comingin contact with the two oppositely-movable cutting edges. The rapidityof movement of the knife-blades is de pendent upon the pitch or thewave-shaped cam. It will thus be readily apparent how a rotation of thewheel 1 causes a rapid actuation of the two sets of knife-blades 5 and6.-

The shaft 19 is fixedlysecured to a U -shaped bar 22. The U-shaped bar22 is movably secured to a hub 23, fixedly secured to the shaft 2 bymeans of four links 24 24. One of the links 24 is provided with anextension 25, which may be secured in place along the shaft by means ofa detent orcatch 26. It will be seen that a vertical movement of theU-shaped bar 22, together with the shaft 19, may take placesubstantially in a plane parallel to the hub portion 23 when the arm 25is moved up or down. In the normal position the arm 25 is lowered andretained in place by the catch 26, in which position the rollers 21 2lengage the surfaces of the wave shaped cam 4. Then the arm 25 is broughtout of engagement with the catch 26 and is raised, the rollers 21 arereleased from the cam 4, and a rotation of wheel 1 will not actuate theknifeblades 5 and 6.

A tube 27, preferably split at both ends, is fastened at one extremityto the U-shaped bar 22 and incloses the connecting-rods 17. The otherend of the tube 27 is pivotally secured byits two projecting arms 27 27to the supporting-bar 7 by means of a cross-bar 28, provided for thispurpose with ears or projec tions 29 29. Guides 30 30 are alsol providedupon the cross-piece 28 to prevent disengagement between theconnecting-rods 17 17 and the vertical projections 16 16, provided uponeach set of knife-blades 5 and 6. The con-` necting-rods engage pins 3131, fastened to the said Vertical projections 16 16. A sliding shoe 32is pivotally secured at one end to the cross-bar 28 and is adjustablyconnected to the opposite end by means of a slotted ,arm 33 and aset-screw 34.

Alever 35 is rotatably secured to a framework 36. The said framework hasmounted thereon three rotatably-mounted wheels 37 37 37, placed aboutone hundred and twenty degrees ap'art, which wheels are provided withgrooves and are adapted to engage a web 38 of a wheel 39, whosecross-section is preferably T-shaped. The frame 36 is preferably fxedlysecured to the shaft 2. A rotation of wheel 39 is, however, permitted,due to the mounting of said wheel about the three small wheels 37 37 37.The lever 35 is secured at its other extremity to projecting arm 27 ofthe tube 27.` It will be seen that the upward or downward movement ofthe lever will effect an upward or downward movement of thesupporting-bar 7, thus controlling the height above the ground at whichthe grasses are to be cut, and to accomplish this result I em ploy ahand-controlled lever40, secured to ajrock-shaft 41. The lever 35 ispivotallysecured to one of the arms 27' of the tube 27, which arms 27lare pivotally secured to projections provided upon the cross-bar 28, ashereinbeforestated. Theshaft41ismounted in a xed bearing provided uponthe frame 36 and is secured by means of the connectingbar 42 to apivotal point upon the lever 35. An angular displacement of the hand-conIIC trolled lever 40 rotates the rookshaft 4l,whi ch l rock-shaft bymeans of-itsprojeoting arm 'raises one end of the lever 35, Whelby thesupporting-bar Tand the tube 27 are raised or lowered, as desired, tocontrol the height from the ground at which the knife-blades are adaptedto sever the material. The frame 36, upon whichV the wheels 37 37 37 aremounted, is preferably constructed in the form of an arc of a circle,with spokes 36 passin gthrou gh a hub 37', which is secured to the shaft2. The frame 36 is provided with a bearing vto support the rock-'shaft4l and is also-provided with means for pivotally supporting one end ofthe lever 35, which lever is connected to a projecting'arm of therock-shaft 41 by means of the connecting-bar 42. A

"Y -guide-bar 4:3,provided with notches, is mountsaid guide-bar.

cIearneSS. v

While I haveherein shown and particu' larly described the preferredembodiment of my invention, I do not wish to limit Ymyself to 'theprecise construction and arrangement as'herein shown and particularlydescribed;

but,

Having thus described my invention, I claimas new and desire to secureby Letters Patent-V 'p 1. In a harvesting-machine, the combina# tionwith atraction-wheel, of a shaft about which said traction-wheel isrotatably mounted, a framework alsovmountedupon said shaft, asecondwheel -rotatably mounted about said framework, two rows of 'knife'blades movingrelatively in oppositel directions, a wave-shaped'eammounted upon thev interior periphery -of said Vtraction wheel, meansinterposed'between the ysaid waveshaped cam and the said two rows ofknifeblades foreausingan actuation thereof in opposite directions,'saidmeans passing transversely through said framework, and leverv mechanismfor disengagihg said means from the` said wave-shaped cam, substantiallyas.. described.

2. In a harvesting-machine, thfeucombinatiou'with'a traction-wheel, of ashaft about which said traction-wheelis rotatably mounted, a frameworkalso mounted' upon 'said shaft, a second wheel rotatably' mounted vaboutsaid framework, tworows of knifebladesrmoving relatively in opposite`directions, a wave-shaped cam mounted upon the interior periphery ofsaid 'traction-wheel, means interposed between the said wave shapedcama'nd the said two rows of knifeblades for causing an actuation.thereof in opposite directions, said means passing transverselypthroughsaid framework, lever mechanism for disengaging said' means from thesaid wave-shaped cam, a framework for supporting the said ltwo rows ofvknife-blades,

and means mounted upon said knife-supporting framework for adj ustingthe height thereof from the ground, substantially as del scribed. Thismember may support the seat 3. In a harvesting-machine, the combinationwith a tractionwheel, of a shaft about which said traction-wheel :isrotatably mount.

ed, a framework also mounted upon" said fshaftLa second wheel rotatablymounted about saidA framework, two rows ofknifeblades Amovingrelatively'in opposite directions,a wave-shaped cam mounted upon theinteriorl periphery of said traction '-wheel, means interposed betweenthe said Waveshaped cam and the'said two rows of knifeoppositedirections, said meansv comprising levers and connecting-rods passingthrough s'aid framework, lever mechanism for disen-l `gaging said meansfrom the said wave-shaped vblades for causing an actuation thereof in

